Lacustrine transgressions in the late Cenozoic Ussuri-Khanka depression (Primor’e)

In the Ussuri-Khanka depression of Primorye, the Quaternary alluvial-lacustrine and lacustrine sedimentogenesis progressed under conditions of transgressive accumulation in response to the depression tectonic subsidence and recurrent climatic fluctuations. The alluvial dams and irregular accumulatio...

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Bibliographic Details
Published in:Russian journal of Pacific geology 2007-08, Vol.1 (4), p.352-365
Main Authors: Korotkii, A. M., Grebennikova, T. A., Karaulova, L. P., Belyanina, N. I.
Format: Article
Language:English
Subjects:
Cenozoic
Climate change
Ecological succession
Fluctuations
Freshwater
Geology
Holocene
Lakes
Pleistocene
Quaternary
Water levels
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Summary:In the Ussuri-Khanka depression of Primorye, the Quaternary alluvial-lacustrine and lacustrine sedimentogenesis progressed under conditions of transgressive accumulation in response to the depression tectonic subsidence and recurrent climatic fluctuations. The alluvial dams and irregular accumulation are proved to have been the leading factors of lakes' formation within the depression. As is shown, fluctuations of the water level in limnic reservoirs depended on the climatic changes. New data considered in this work confirm the lacustrine genesis of a greater part of the Middle Pleistocene-Holocene sedimentary succession in the Khanka depression. Two transgressive phases, when the water level in the lakes rose by 1.5-2.0 m above the present one, are established for the Subboreal. The general conclusion is that the mesorhythmic structure of the sedimentary succession in the Ussuri-Khanka depression reflects the influence of climatic fluctuations in the Late Cenozoic.[PUBLICATION ABSTRACT]
ISSN:1819-7140
1819-7159
DOI:10.1134/S1819714007040045